3. Benkyousuru (勉強する): Raishuu, shiken ga aru node, kore wo benkyou shinakereba narimasen = I have to study these topics because of the coming test next week.
4. Manabu (学ぶ): Yume no tame ni, iro iro no koto wo manabanakereba narimasen = In order to achieve my dream, I have to study a lot of things.
*to study

Note: Manabu also means "to learn" which is different from "narau (習う)" and "osowaru (教わる)". Sorry, I couldn't explain them.

Similar meaning, different situation
1. Youyaku (ようやく): At last, I can watch Japanese drama without relying on the subtitles.
2. Yatto (やっと): After searching every single corner of the house for hours, I finally found the lost key.
3. Tsuini (ついに): After a while, he finally came.
4. Iyoiyo (いよいよ): Finally, it's time to return these textbooks.
5. Toutou (とうとう): The research of so many years is finally completed.
6. Kekkyouku (結局): In the end, a dream is just a dream.
*at last/finally, etc.